Sime Murelle Advanced HE MkII Combi Fault codes & diagnostics

Your boiler has stopped because the water pressure inside the heating system has dropped too low to operate safely.

Your boiler has stopped working because it is having trouble reading the temperature of the water leaving the system.

Your boiler has attempted to light the gas burner several times but has failed to detect a flame, causing it to shut down for safety.

Your boiler has automatically shut down because it has detected an excessively high temperature inside the system.

Your boiler has temporarily stopped working because it cannot properly detect the burner flame, so it has safely shut off to prevent any risk.

Your boiler has temporarily stopped working because it cannot detect water flowing through the system.

Your boiler has detected an issue with one of its internal temperature monitoring sensors, which usually stops it from working properly to keep you safe.

Your boiler has stopped working because the internal electronic connection to the gas control valve has come loose or been disrupted.

Your boiler has detected that the temperature of the exhaust gases leaving the system is too high, so it has safely shut down to prevent damage.

Your boiler has detected an issue with the sensor that monitors the temperature of the exhaust gases leaving the system, causing it to safely shut down.

Your boiler has detected that a critical internal electrical connection to the fan has come loose or been disconnected, causing it to lock out for safety.

Your boiler has detected that water is backing up inside the internal pipes because the waste pipe leading outside is likely blocked or frozen.

Your boiler has locked itself out for safety after too many failed attempts to restart.

Your boiler has detected an electrical power supply issue where the electricity frequency coming into your home is not correct.

Your boiler has stopped working because the flame kept going out multiple times in a row.

Your boiler has lost its digital connection with the thermostat or internal controls, meaning it cannot properly receive instructions to heat your home.

Your boiler has lost its calibration settings and needs to run a special adjustment program to safely balance its gas and air mixture.

Your boiler has stopped working because the water pressure inside the heating system has dropped below the minimum level required to operate safely.

Your boiler has stopped working because it is unable to accurately measure the temperature of the water inside the system.

Your boiler is failing to ignite because it cannot detect the burner flame, meaning you currently have no heating or hot water.

Your boiler has detected that it has become dangerously overheated and has automatically shut itself down to prevent damage.

Your boiler has detected that the burner is not staying lit, so it has shut itself down as a safety precaution.

Your boiler has detected that water is not moving through your heating system correctly, which is preventing it from heating your home or water.

Your boiler's computer is struggling to read a temperature sensor, which has caused it to stop working to ensure your safety.

Your boiler has lost the electrical connection to the valve that controls the gas supply, meaning it cannot safely start up to provide heat or hot water.

Your boiler has lost its correct settings for how it handles air intake and exhaust, which means it has safely stopped working to prevent incorrect operation.

Your boiler has detected that the flue gases are getting too hot, so it has automatically shut down to prevent damage to the internal components.

Your boiler has detected an issue with the sensor that monitors the temperature of the exhaust fumes, causing it to stop operating to ensure safety.

Your boiler has stopped working because the connection between its internal fan and the main control board has been lost or interrupted.

Your boiler has detected that waste water cannot drain away properly, so it has shut down to prevent internal flooding.

Your boiler has blocked itself because it has been reset too many times in a row without the original underlying problem being solved.

Your boiler has detected that the electricity supply coming from your home's wall socket or fuse spur is lower than it needs to be to operate safely.

Your boiler has detected that the electricity supply coming from your home's mains is unstable or at the wrong frequency, preventing it from starting safely.

Your boiler is repeatedly failing to keep its internal flame lit, so it has stopped working to keep you safe.

Your boiler's control panel is registering that one of the buttons is permanently stuck or faulty, which is preventing the system from operating normally.

Your boiler's internal computer has lost its connection to the external controller, meaning it cannot receive signals to turn your heating or hot water on.

Your boiler has lost its internal settings and needs a professional software calibration to communicate correctly with its internal components.

Your boiler is struggling to read the temperature of the water flowing out of it because the sensor that monitors this is loose or incorrectly fitted.

Your boiler has detected that it is struggling to burn the gas cleanly and has temporarily paused its operation to prevent any build-up of fumes.